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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag has occurred near Onagawa Chō in Japan


Earthquake location 38.2645S, 142.1075WA light earthquake magnitude 4.2 (ml/mb) strikes 61 kilometers (38 miles) from Onagawa Chō in Japan on Saturday. The 4.2-magnitude earthquake was detected at 09:17:26 / 9:17 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, 142.1075° East, 38.2645° North, depth 70.56 km. The earthquake was roughly at a depth of 70.56 km (44 miles). Exact time and date of earthquake 08/11/25 / 2025-11-08 09:17:26 / November 8, 2025 @ 9:17 am UTC/GMT. Event id: us7000re62. Ids that are associated to the earthquake: us7000re62.

Nearby country/countries, Japan (c. 127 288 000 pop) (That might be effected). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Matsushima, Wakuya, Yamoto. Event epicenter was 72 km (45 miles) from Ishinomaki (c. 117 200 pop), 80 km (50 miles) from Yamoto (c. 32 000 pop), 90 km (56 miles) from Wakuya (c. 18 300 pop), 92 km (57 miles) from Matsushima (c. 16 400 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days eight and in the last 365 days sixty-six earthquakes of magnitude 3.0 or greater that has occurred nearby. Every year there are an estimated 13,000 light earthquakes in the world.

Did you feel it?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 61 km ESE of Onagawa Chō, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 142.1075° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.2645° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 70.56 km Depth of the event in kilometers.
Place 61 km ESE of Onagawa Chō, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-11-08 09:17:26 Time when the event occurred. UTC/GMT
Updated 2025-11-29 08:25:35 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 271 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used 25 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.647 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.72 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 121 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000re62 Id of event.
Event Code 7000re62 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000re62, A comma-separated list of event ids that are associated to an event.

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